Nail discoloration: Dark lines across the nails most commonly are from either trauma or fungus. As long as it is healing he should be fine... if you are concerned, a picture or video upload will help and an exam will definitely give you the correct diagnosis and treatment if needed.
Answered 11/28/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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